CVE-2021-28216

HIGH
Published Aug 5, 20214y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Aug 5, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-587
CWE-763

Affected Products 1

VendorProductVersionRange
tianocoreedk_ii*any

References 2

  • bugzilla.tianocore.org https://bugzilla.tianocore.org/show_bug.cgi?id=2957
    ExploitIssue TrackingVendor Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.